Sand-washing machine



(No ModeL) 3 SheetsSheet 1.

G. W. KILBORN.

SAND WASHING MACHINE.

Patented Mar. 31, 1885.

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INVENTOR' WITN E85 E5 By HIS AU Lithograph-Ir, WaIhinglorL u. c.

(No Model.)

3 Sheets-Sheet 2 G. W. KILBORN.

SAND WASHING MAGHINE.

No. 314,852. PatentedMar. 31, 1885.

WITNESSES N. PETERs Phowumu m hu. washiogon nc (No Model,) 3 Sheets-Sheet 3.

G. W. KILBORN.

SAND WASHING MACHINE.

No. 314,852. Patented Mar, 31, 1885.

UNITED STATES CHAUNOEY W. KILBORN, OF SOUTH VINELAND, NEW JERSEY.

SAND-WASHING MACHlNE.

SPECIFICATION formingpart of LettersPateri't N0. 314,8.E2, dated March 31, 1885.

Application filed April 22, 1884.

To all whom it may concern.-

Be it known that I, OHAUNOEY \VooDRUEF KILBORN, a citizen of the United States, residing at South Vineland, in the county of Cumberland and State of New Jersey, have invented a new and useful Sand-Vashing Machine; and the objects thereof are, first, to facilitate the passage of the sand; second, to eliminate approximately all the impurities containedtherein; and, third, to attain these ends with simplicity of construction.

Figure 1 is a plan view of a device operatively embodying the principles of my invention. Fig. 2 represents a detached view of the scoop. Fig. 3 is an elevation of my device, showing the relation of the parts. Fig. 4 is a longitudinal section on the line a: x of Fig. 1, and Fig. 5 is a transverse section.

Similar letters indicate corresponding parts in all the views.

A represents the trough.

represents the shaft on which the spiral screw E is held by spokes LL M M,.and to which power may be applied through a pulley, J, or other mechanical equivalent.

B represents the end of the screw formed into ascoop,whose cycle of usefulness isgconfined to the lower half-revolution, during which operation a large quantity of purified sand is transferred from the trough to a place outside the trough ,to be drawn upon for consumption. a

D is a chute which conveys the purifie sand from the trough A to the destination.

. trough,usual in these machines to solidify the sand for removal, but which is practically found to delay the entire operation, and necessitate as well human assistance as increased power at the shaft.

F is the passage by which the sand, impurities, and water are introduced into the screen or riddle G. The riddle G is mounted on the shaft H, to which power may be applied by a suitable mechanical device, as by pulley I.

(No model.)

K represents the cleau-water inlet intothe trough A, forming a counter-current to the sand and water traversing the trough, highly conducive to the separation and isolation of impurities which adopt flotation when relieved from intermixture with substances of greater specific gravity, and hence are readily carried to and discharged from the overflow O.

L L M M represent radiior spokes by which the screw E is affixed to and sustained upon the shaft 0.

N N N represent the frame of the'screen or riddle.

0 represents the outlet for the eduction of the counter-current admitted by pipe K, and charged with impurities in suspension therein upon arrival at the overflow.

Heretofore in the purification of sand for use in the manufacture of glass and earthenware it was usual to submerge the screw and to place in the end of the trough a cylinder of a diameter slightly larger than that of the screw, so as just to permit its rotation therein. In practice it is found that both these incidents are subversive of an economical and successful use of the machine. My invention contemplates the submersion of one-third of the screw only, which effects a better transmission of the sand, insures ample agitation for the separation of impurities, and necessitates less power. By dispensing, moreover, with the cylinder, clogging and stoppage are prevented, while its object-the solidification of the sand for removale-is sufficiently attained by so disposing the scoop on the screw as either to delay action until the last second of its revolution or until the end of each alternate revolution. Heretofore the screw was immersed in the operation, which seriously militated against the separation of impurities, because the freedom of action within an ample space incidental to this invention is not possible by submersion of the screw--according to the axiom that distinct bodies cannot occupy the same space at the same time.

The operation of my device is as follows: The mass is fed to the machine by inlet F. The riddle G, upon its reception, passes the sand and water and discharges the clay, gravel, and other coarse impurities. The rotating screw carries the sand to the sphere of action of the scoop B meanwhile agitating it to'separate fine impurities, in which function it is assisted by the counter-current whereby they are also conducted off. I The scoop B elevates the sand onto the chute D, whence it may be conducted to barrels or other media of trans portation. The overflow O is always on a side of the trough A adjoining the line of motion of the shaft 0. V

Havingthus fully described my improvements, What I claim, and desire to secure by Letters Patent of the United States, is

1. The screw E, having its end formed into a scoop, for the purpose specified.

OHAUNOEY W. KILBORN.

Witnesses:

RICHARD L. HOWELL, LEWIS HOWELL, Jr. 

